Image inspection tool
Image DPI Checker
Inspect an image's pixel dimensions and calculate its effective print resolution at any physical size without uploading the file.
● Runs in your browser
How it works
A useful result,
without the upload.
Inspect an image's pixel dimensions and calculate its effective print resolution at any physical size without uploading the file. The file is decoded and processed inside this browser tab, so File Preflight never receives its contents.
LOCAL METHODEffective PPI = pixel dimension ÷ intended print dimension
Worked example
A 3600 × 2400 px image placed at 12 × 8 in has an effective resolution of 300 PPI.
Before you send the file
- The image is decoded locally and never sent to File Preflight.
- A metadata DPI value does not create detail; pixel dimensions determine available information.
- Inspect compression artifacts and focus quality in addition to the calculated resolution.
File handling note
RELATED FIELD GUIDEHow to Check Image DPI Before PrintingLearn how to verify pixel dimensions, effective PPI and print size before sending a photo or artwork file to a printer.Read the guide ↗Keep an untouched original and inspect the downloaded file before replacing any production asset. Closing this tab removes the selected files from the tool.